Loom



Patented dune 3, 1924.

UNETED STATES W'ILHELIvI SIMMCHEN, O1? AUSSG-KLEISCHE, CZECHOSLOVAKIA.

Application filed August 27, 1921.

Serial No. 495,957.

(GRANTED UNDER THE PROVISIONS F THE ACT 0F MARCH 3, 1921, 41 STAT. L.,1313.)

To all whom t 72mg/ concern:

Be it known that I, VILHELM SIMMCHEN,

a citizen of the Czechoslovak Republic, re-

siding at Aussig-Kleische, No. 14-2 F. A. lllirgnerstrake,Czechoslovakia, have invented certain new and useful Improvements inLooms, for which I have obtained the following foreign patents, England,

Patent No. 161,155, dated May 26th, 1921; Germany, Patent No. 355,848,granted April 27th, 1922; Czechoslovakia, Patent No. 7,695, datedFebruary 7th, 1922; Switzerland, Patent No. 97,845, dated Decemloci-13th, 1922; Belgium, Patent No. 300,- 15 511, granted December 31st,1921; and

' Italy, application Serial No. 31e/52, tiled September 16th, 1921, andot which the tollowing is a specification.

The usual method of mounting` the crank shaft in a loom, is to have thebearing for the end gudgeon iixed to the side wall or frame on theinside, the crank being thus on the inside of the said trame. A secondbearing on the inner side of the crank is provided mainly for steadyingpurposes. lVith ythis arrangement an amount of space transversely of theloom equal to the full width of the crank is occupied by the crankinside otl the loom. rlhe crank is liable to t'oul adjacent heddles, andwhen the bearings are worn, oil is liable to be projected onto thegoods. Cranks mounted wholly outside the frame have also been used, butalso in this case .the crank is disposed unsymmetrically to each sidetraine.

The arrangement of the crank eccentrically to the side 'frame restrictsthe speed of the running of theloom, and tends to distort the sideframes, especially at the moment of braking i. e. sudden stopping orAthe movement, this distortion depending` upon the distance of the crankcenter from the center of the frame. Y c

According to my invention the crank is so mounted that its pin rotatesin an aperture provided in the frame within which it is located, thecenter of the pin of each crank being substantially in the central planeof its respective frame, and the thrust of the connecting rod beingrconsequently in this plane, or near the saine, since this rod issubstantially located in that plane. vWith this arrangement a markedincrease of steadiness and smoothness of runningis obtained, and thereis no violent vibration ir the brake is suddenly applied, the thrust ofthe connecting rod against the crank being directly7 absorbed by thetrame at and in the direction ot its central vert-ical plane.

The invention is illustrated in the annexed drawings Figure 1 is anelevation;

Figures 2 and 3 are. sections on the line *l-3 of Figure 1, exemplifiedin two diferent forms of construct-ions; and

Figure al is a plan view, in section on the line C-D of Figure 1.

ln the drawing a designates the side frame, and t a bracket fixed withina gap in the frame, and having two bearings for the crank shaft, one ateach side of the traine with the crank disposed I'between them, so thatthe crank pin center coincides with the central vertical plane of theside trame in which it is located, as may be seen from Figure c is theconnecting rod and 5 the lay.

ris shown in Figure el by dotted lines the new construction renders itpossible to use the whole Width of the loom to within a small marginfrom the side trames.

The arrangement can be applied to ei;- isting looms, the lay and crankshaft being lengthened and strengthened as required. I have found forexample, that with a certain type and width of loom, an increase of 18%in output can be obtained by this means, with the loom running at thesaine speed because of the greater widths of material which may be thusproduced.

In applying the arrangement to an eX- isting loom it may, oi' course, benecessary to cut or otherwise provide apertures in the Side trames toreceive the cranks. Separate brackets or the like, one for each bearing,may be fixed to the trames, at each side thereof. lVith new` looms oneblock for both bearings may be used as shown in Figure 2, or a block asshown in Figure 3, fastened to the wall with the bearing screwed on fromthe inside.

TWhat 1 claim is 1 A loom having the cranks for operating the laylocated in its side frames, the center of each crank being in line withthe central plane of its respective frame to permit the frame to take upthe entire reaction exerted by the crank and a bearing disposed onpeachside of the crank and being attached to the frame, each frame having anaperture to permit free movement of the connecting rods attached to saidcranks.

2. A loom having the cranks for operating the lay located in its sideframes, the center of each crank being in line With the central planeoit its respective frame to permit the frame to take up the entirereaction exerted by the crank, and a bearing bracket foreach crankhaving two bearings,

one located on each side of the crank, said bracket being attached tothe side traine symmetrically to its central plane, each frame having anaperture to perrnit free movement o' the connecting rods attached tosaid cranks.

In testimony whereof I affix my signature in presence of two Witnesses.

VILHELM SIMMCHEN. Witnesses:

C. YALFRUM, L. HTTER.

